Project Server 2010: PWA Removing Default Project Site Security Groups When Creating a New Project

Question

I looked for this specific issue with Project Server 2010/PWA/SharePoint and could not find an exact answer... hopefully someone can help.
We are currently using Project Server 2010 and have a number of project site templates that are used dependent upon the enterprise project type selected. Each of these project site templates have unique permissions which should create the default security
groups on the project site upon publishing/syncing:
<Project Name> Members
<Project Name> Owners
<Project Name> Visitors
<Project Name> Project Managers (Project Web App Synchronized)
<Project Name> Team Members (Project Web App Synchronized)
Web Administrators (Project Web App Synchronized)
Whether a user creates a project through PWA or Project Pro 2010 and imports the project into PWA, we get a weird result in the Site Permissions of the newly created project site. PWA will remove all default security groups from the project site template
and add a whole list of users in the Site Permissions list without groups. 
Once the project is published and the project site is created, we can then go back and add those default security groups back in the project Site Permissions and even add a couple of custom groups without them being removed on all subsequent project syncs
or publishing. 
How do we get PWA to not overwrite the project site templates' security groups and place each user in the proper default security groups? At the same time, how is PWA adding a number of users into the Project Site Permissions?
Thanks in advance.

Answer 1

Paul,
Thanks for that information. Right now we are using the Test environment to turn the Auto-sync feature back on. I suspect that the reason this is happening is due to PWA groups/categories/security templates. There may be more than one PWA group that is "overwriting"
the default project site groups upon initial creation of the project. We will look further into the security settings to tighten up the policies.